Lock mechanism.



H. G. VOIGHT.

LOUK MECHANISM.

APPLICATION FILED MAR. 1a, 1913.

Patented June 2, 1914.

4 SHEETB-SHBET 1.

iHlHI H. G. VOIGHT.

LOCK MECHANISM.

APPLICATION FILED MAR. 1a, 1913.

Patented June 2, 1914.

4 SHEETS-SHEET 3.

H. G. VOIGHT.

LOCK MECHANISM.

APPLIGATION FILED MAR. 1a, 1913.

1,099 1 0 Patented June 2, 1914.

4 SHEETS-SHEET 4.

ITED STAY I ES PATENT OFFICE.

HENRY G. VOIGHT, OF NEW BRITAIN, CONNECTICUT, ASSIGNO'R TO THE AMERICAN HARDWARE CORPORATION, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

LOCK MECHANISM.

To aZZ whom it may concern:

Be it known that l, HENRY Gr. VOIGHT, a citizen of the United States, residing at New Britain, Hartford county, State of Connecticut, have invented certain new and useful Improvements in Lock Mechanism, of which the following is a full, clear, and exact description.

This invention relates to locks of the type embodying cooperating and independently operable primary and secondary boltc0ntrolling mechanisms, one controlled by a series of keys from one side of the lock, and the other by manually controlled means operable from the opposite side of the lock, these means operating to block the control of the bolt through the key'operated mech anism.

It is one of the objects of the present invention to provide means controlled by a certain key, say, one only of said series, whereby the manually controlled mechanism may be directly operated through a keycontrolled. means.

Another object is to provide a particularly advantageous form of key-controlled mechanism for effecting this result.

A third object is to provide an improved form of manually controlled means in a device of this character.

These and other objects and advantages will be seen from the detailed description following, taken in conjunction with the accompanying drawings forming part thereof and illustrating a preferable embodiment of the invention.

In these drawings: Figure 1 is a view in elevation of a lock embodying the present invention, the cover plate of the lock case be ing removed. Fig. 2 is an end elevation, partly in section, of the lock. Fig. 3 is a view in elevation, showing the position of the parts with the dead bolt projected through the fixed roll-back. Fig. 4' is a similar view showing the position of the parts with the bolt projected through the movable rollback and the thumb turn mechanism. Figs. 54) inclusive show details of the bolt mechanism. Figs. 10-16 inclusive are views of the cylinder lock mechanism employed. Figs. 17 and 18 are views of two types of keys used in connection with said cylinder lock. Fig. 19 shows a detail of the bolt link.

Referring to the. drawings by numerals, 1

Specification of Letters Patent.

Application filed March 18, 1913.

Patented June 23, 1914:.

Serial No. 755,101.

indicates the lock case and 2 the face plate of a lock of the mortise type, having a latch bolt 3 with the usual spring pressed yoke 1 and knob-controlled roll-back 5. A dead bolt 6 is provided, suitably guided in the casing and having its upper edge notched as usual as at 7 to receive controlling tumbler and lock roll-back. The body of the dead bolt has an extension 8 at its lower edge provided with an elongated slot 9 therein. Adjacent its upper edge is located a pivot stud 10 on which a tumbler 11 is journaled, this tumbler being of the usual spring-pressed type having a lateral offset seating within the bolt notch and being gated to cooperate with the fixed fence 12 rigidly carried by the lock case. The rear end of the dead bolt is recessed, as at 6 and the lower end of a swinging link 13 pivotally secured thereto, the upper end of this link being slotted as at 1 1 and sliding over and guided by a pin 15 secured to the lock case. This link is so positioned relative to the key-controlled roll-back, hereinafter described, as to insure the complete retraction of the dead bolt through said roll-back.

c1 reciprocating slide 16 is provided, this slide resting upon and being suitably guided in the lock case and being opera tively, though loosely, connected with the dead bolt so as to form in effect an operative part thereof. This connection is accomplished by offsetting the upper end of the slide out wardly and by providing this end with a pin 17 which seats in the elongated slot 9 of the dead bolt and lies closely adjacent the forward end thereof when the dead bolt is retracted. At its upper end a pivot stud 18 is provided upon which is journaled the upper end of a second tumbler or lock-controlling mechanism 19. The tumbler 19 is, as usual, spring pressed and is gated to co.- opcrate with the fixed fence 12. The priinary tumbler 11 is provided with lugs 11 adjacent the lower edge of its outer face. The secondary tumbler 19 lies adjacent but in a different plane from the primary tum bler, and is provided with a lateral projec' tion or offset 19 alined substantially with that of the tumbler 11 and projecting over into the vertical plane of its lugs 11, its lower edge lying closely adjacent and above said lugs. The tumbler 19 has a lower ex tension 19* substantially parallel. to and in superposed relation to the lower portion of the slide 16. This latter has extending from its outer face at this point, a plurality of pins 20 forming a rack surface. Cooperat' ing with this rack 20 and with the tumbler extension 19 is a thumb-turn mechanism, its hub 21 being positioned between the lower edge of the dead bolt 6 and the upper edge of the slide 16, a T-piece or thumb piece being provided on the interior side of the lock case, its shank being shaped to fit in the hub 21 as usual. The hub carries a disk provided with a toothed quadrant 22 arranged and positioned to engage the rack pins 20. Said hub is also provided, adjacent and in advance of the quadrant 22, with a roll-back arm 23 lying in the plane of tumbler extension 19 and arranged to engage and depress said extension before the initial tooth of the quadrant engages a rack pin 20 on the slide 16. The dimensions of the quadrant disk and the intermeshing teeth is such as to give a full forward bolt-projecting movement to the slide 16 for a substan tially full quarter turn of the thumb-piece.

A cylinder lock barrel 24: is screwed into and fixed to the lock case 1 from the exterior side of the lock, the barrel being of the usual construction and positioning its inner end adjacent and above the notched upper edge of the dead bolt 6. The barrel 2% is provided with a rotatable plug element 25 whose inner end is shouldered down to form a squared portion 2-3 projecting from the inner face of the barrel. The usual keyhole slot 26 extends through the plug and its squared end extension, and the barrel and plug are also provided with appropriate pin tumbler mechanism of standard form which it is unnecessary to specifically describe or illustrate herein.

A roll-back or cam arm 27 is provided with a slot- 28 in its outer face extending longitudinally thereof and reduced in length at its inner face to form a shoulder 29. The sides of the outer recessed face, adjacent said outer face, are channeled as at 30 to re ceive a sliding plate 31, having an outwardly offset end 32 forming a second roll-back or cam arm. The arm 27 adjacent its rear face is provided with a recess 33 forming a pocket for a coiled spring 34-, one end of which engages the arm at the outer end of the pocket and the other end of which spring is adapted to engage a pin carried by and projecting from the inner face of the sliding plate 31. The wall of the pocket is, of course, slotted longitudinally to permit longitudinal reciprocating movement of the pin and its plate. The roll-back or cam arm seats over the squared projecting end 25 of the plug the upper face of this end resting against the shoulder 29 and its end face lying within the outer channeled face of the roll-back and adjacent the inner face of the sliding plate 31. The roll-back 27 with its sliding plate, etc, when thus assembled on the plug end, is rigidly secured to the plug by suitable means, as by the screws shown. The coiled spring 31 normally forces the pin 35 down until it rests against the upper face of the plug extension 25- This positions the lower edge of the sliding plate 81 in line with and below the upper edge of the keyhole slot 26 in the plug and positions its cam 32 in a plane where it is inoperative as will be seen later. When the barrel is properly positioned in the lock case 1 as described, its roll-back 27 will lie in the plane of the dead bolt 6 and the primary tumbler offset seating in its notched edge.

A series of keys are provided, which keys are bitted to enter the key slot 26 of the plug 25 and cooperate with the pin tumbler mechanism so as to permit the roll-back arm 27 to be rotated. All of these keys are too short, however, to raise the sliding plate 31 so that when the roll-back 27 is rotated through one of these short keys 27, the seconu roll-back 82 will remain in its normal position. The roll-back 27 will depress the tumbler 11 and project and retract the deadbolt (3 in the usual manner, the tumbler 11 and dead-bolt during this action, operating independently of the slide 16 and tumbler 19 owing to the slotted connection 9 between the bolt and slide and to the fact that the lugs 11 of the tumbler are below the offset 19' of the secondary tumbler 19. The second roll-back arm 32 is held by the coiled spring 3% in a position where its arc of movement does not bring it in contact with the eflset 19" of the secondary tumbler. This, of course, takes place when a short key 56 is employed which does not engage the low r edge of the sliding plate 32. A special key. such as 37, is provided, which key is the long key and is bitted to cooperate with the tumbler mechanism of the cylinder lock, and is also of such length that it extends back to bring its rear end, which is suitably beveled, against the under edge of the sliding plate 31, raising said plate and its roll-back 32 to a position where it is operative, as will be later explained.

The cylinder lock construction descri ed forms the subject-matter of, and is claimed in, my copending and divisional applica tion. Serial No. 777,236.

The secondary tumbler 19 is intended primarily as an emergency tumbler adapted to be operated directly through a suitable thumb-turn mechanism on the interior side of the door opposite that from which the cylinder lock mechanism is operative. The thumb-turn is given a quarter revolution, this first causing its roll-back arm 23 to de press the extension 19' of tumbler 19. The offset 19 of tumbler 19 will thereupon en- 7 gage the lugs 11 of the primary tumbler 11 and will pull said tumbler downwardly with it, freeing the bolt. By this time the initial tooth of the quadrant 22 will engage with one of the pins forming the rack 20 and will move the slide 16 forwardly. "When the dead-bolt 6 is in retracted position, the pin 17 rests within the slot 9 of the dead-bolt and against its forward edge so that when the slide 16 is moved forwardly through the quadrant pinion of the thumb-turn, it will carry the dead-bolt with it, the tumbler mechanisms having been previously moved to inoperative position through theroll-back arm 23 of the thumb-turn mechanism. When thus projected, the dead-bolt may not be retracted from the opposite side of the door through any of the series of keys 36 hereinbefore described inasmuch as the gate of the tumbler 19 is now positioned in front of the fixed fence 12. The keys 36 being too short to engage the plate 31, are unable to project the second roll-back 32 to a position where it will engage the offset 19 of this tmnbler 19 and permit the depression of both tumblers and the retraction of the bolt. 13y utiliziiu;- the emergency key 37, however, the second roll-back is forced outwardly and both roll-backs 27 and 32 may be rotated through the long key 37 from the exterior of the door, this serving to engage both rollbacks with their respective tumblers and returning the dead-bolt from the projected position shown in Fig. 1 to the retracted position shown in ii 1. Of course, the dead bolt may be retracted from the interior through the thumb turn by operating the same in the reverse direction, the slide 16 and its tumbler 19 being thereby retracted and, as said slide and tumbler are coupled to the dead bolt 6 and its primary tumbler 11 by reason of the engagement of projection 1.9 with the rear lug 11, the dead bolt 6 and its tumbler 11 will be retracted also and at the same time as slide 16 and its tumbler. Otherwise, if no such means as the rear lug 11" were provided, the slide 16 and its tumbler alone would be retracted owing to the pin and slot connection thereof with the dead bolt 6. The emergency or long key 37 may also be utilized from the exterior to proj ect the dead-bolt and lock it against retraction by any of the other keys inasmuch as this emergency key will operate the tumbler 19 and in projecting the bolt, position the gate of said tumbler forwardly of the fixed fence 12, it being impossible to depress this tumbler and retract the bolt through any of the other keys.

By utilizing in connection with a single actuating mechanism a second roll-back which cooperates directly with the secondary mechanism comprising the tumbler 19 and slide 16, I avoid the necessity of employing a. separate and auxiliary rollback actuating mechanism which is engaged by a special key, such as the long key and itself cooperates with such a secondary actuating mechanism as described.

In the construction of the thumb-turn mechanisms heretofore known, it has been ordinarily necessary to give substantially a half turn to the thumb-turn piece in order to project the dead-bolt. The ordinary occupant of room whose door is provided with such a lock does not ordinarily turn this thumb piece to the full extent to fully project the bolt and places the parts of the lock in a semi-projected position so that it is possible to force the lock in spite of the thumb turn. By providing a thumb turn mechanism necessitating only a quarter turn to fully project the dead-bolt, the danger of incomplete projection is materially reduced. Full retraction of the dead bolt is insured by the fact that the link 13 is so p0- sitioned relative to the roll-back 27 as to lie in the path of bolt-retracting movement of this rollback until the bolt has been retracted so that this link must be moved backward before the plug can be turned to a position to retract the key, and this positioning of the link, whether done directly by engagement of the roll-back therewith or through the bolt itself, insures the full retraction of the bolt.

While I have herein described a particular embodiment of the invention, it will, of course, be understood that the same may be altered in detail and relative arrangement of parts within the spirit of the invention and the scope of the appended claims.

l Vhat 1 claim, therefore, and desire to secure by Letters Patent is:

1. In a look, a casing, a bolt controlling mechanism mounted therein, a second bolt controlling mechanism within said casing in a diflerent plane from said first controlling mechanism, a cylinder lock mechanism carried by said casing having an operating member operatively positioned relative to one of said mechanisms and operable by a series of keys to operate said mechanism and having also a second operating member carried by and bodily movable relative to the first operating member and normally inoperatively positioned relative to the other of said bolt controlling mechanisms, and means to so position said second operating member relative to said other bolt controlling mechanism by a certain key whereby it may actuate said mechanism.

2. In a lock, a casing, a primary mechanism therein provided with an operating abutment, a secondary mechanism having an operating abutment positioned in a differentplane from said primary abutment, a rotatable element provided with an operating member normally positioned to rotate with said element in an arc in the plane of one of said abutments, second operating member carried by and movable relative to said first operating member and positioned to rotate with said member in an are normally out of the plane of the other of said abutments, tumbler mechanism coiiperating with said rotatable element, a series of keys cooperating with said rotatable element and tumbler mechanism to rotate said element and operating members to engage one of said abutments and operate its mechanism through said fixed operating member, said relatively movable operating member being adapted for operation and being positioned by one certain of said series of keys to rotate with said element in an arc in the plane of the other of said abutments and to engage the same and operate its mechanism upon the rotation of said element.

3. In a lock, a casing, a dead-bolt therein. a cylinder lock mechanism carried by said casing and having a fixed bolt-actuating member, and a. second and bodily movable actuating member positioned in a difi erent plane and carried by the fixed member, said fixed member being operable from one side of the door by a series of keys to project and retract said bolt, manually controlled mechanism operable from the opposite side of the door to project and retract said bolt and operable also to project and lock said bolt against retraction from the opposite side through said series of keys, and another and certain key cooperating with said cylinder lock from said opposite side of the door to bodily move said second bolt-actuating member relative to said fixed member and to a position to coiiperate with said manually controlled mechanism to retract and project said dead-bolt.

l. In a lock, a casing, a dead bolt therein, primary and secondary tumbler mechanisms positioned in different planes and cooperating with said bolt, a cylinder lock mechanism carried by said casing embodying a key-controlled rotatable plug carrying a relatively fixed roll-back and a second roll-back carried by and movable relative to the first rollback, said roll-backs being positioned in different planes and said fixed roll-back being operable by a series of keys from one side of said door to engage said primary tumbler mechanism and bolt to project and retract said bolt, means normally positioning said movable roll-back to rotate with said plug and first roll-back in an are out of the planes of said tumbler mechanisms, manually cont-rolled mechanism operable from the side opposite said cylinder lock to operate said primary and secondary tumbler mechanisms and to project and retract said bolt, said secondary tumbler mechanism being constructed and arranged when actuated to project said bolt, to lock said bolt against retraction from the opposite side through said series of keys, and means operable from said opposite side through a certain key whereby said movable roll-back is positioned to rotate with said plug and first roll-back in an arc in the plane of said secondary tumbler mechanism to engage said mechanism to project and retract said bolt inde pendently of said manually controlled means.

5. In a lock, a case, a dead bolt therein, a reciprocating bolt-operating member therein provided with a rack and cooperating with said bolt, a tumbler mechanism cooperating with said bolt, key-controlled means operable from one side of the door and cooperating with said tumbler mechanism and bolt to project and retract said bolt, and manually controlled means operable from the opposite side of the door and cooperating with said tumbler mechanism and rack to project and retract said bolt independently of said key-controlled means.

6. In a look, a case, a dead bolt therein, a reciprocating bolt-operating member therein provided with a rack and cooperating with said belt, a tumbler mechanism cooperating with said bolt, key-controlled means operable from one side of the door and cooperating with said tumbler mechanism and bolt to project and retract said bolt, and manually controlled means operable from the opposite side of the door and cooperating with said tumbler mechanism and rack to project and retract said bolt independently of said key-controlled means, and operative to block the retraction of said bolt from the opposite side through said key-controlled means.

7. In alock, a case, a dead bolt therein, a reciprocating bolt-operating member therein provided with a rack and cooperating with said bolt, a tumbler mechanism cooperating with said bolt, key-controlled means operable from one side of the door and cooperating with said tumbler mechanism and bolt to project and retract said bolt, and manually controlled means operable from the opposite side of the door and cooperating with said tumbler mechanism and rack to project and retract said bolt independently of said key-controlled means, and including a roll-back arm cooperating with the tumbler mechanism, and a segmental gear cooperating with the rack of said reciprocating member.

8. In a lock, a case, a dead-bolt therein provided with a rack, primary and see ondary tumbler mechanism cooperating with said deadbolt, key-controlled means operable from one side of the door and cooperating with said primary tumbler mechanism and bolt to project and retract said bolt independently of said secondary tumbler, and manually controlled means including a roll-back and a segmental gear, operable from the opposite side of the door cooperating with said secondary tumbler mechanism and dead-bolt rack to operate said tumbler mechanisms and to project and retract said bolt independently of said key-controlled means said means operating said secondary tumbler mechanism to block retraction of said dead-bolt from the opposite side of the door through said key-controlled means.

9. In a look, a case, a reciprocating deadbolt therein, tumbler mechanism cooperating with said bolt, a key-controlled roll-back cooperating With said tumbler mechanism and bolt to project and retract the latter, and a link connected to and moving With said bolt and lying in the path of bolt-retracting movement of said roll-back While said bolt is projected.

10. In a look, a case, a reciprocating deadbolt therein, tumbler mechanism cooperating with said bolt, a key-controlled roll-back cooperating With said tumbler mechanism and bolt to project and retract the latter, and a link pivotally connected at one end to said bolt at a point adjacent said roll-back and swinging with the projection and retraction of said bolt, said link being guided relative to said lock case to project in the path of bolt-retracting movement of said roll-back While said bolt remains projected, and being operable thereby to completely retract said bolt.

HENRY G. VOIGHT. Witnesses:

IDA M. HUNZIKER, E. E. Morse.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patent Washington, D. C. 

